mauger



Patented Feb. l4, I899. a. A. MAUGER.

COMBINED TANPING AND ROLLING MACHINE. [Application filed Nov. 26, 1897.)(No Model.) 5 Sheets-Sheet I.

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No. 6l9,426. Patented Feb. I4, I899. G. A. MAUGER.

COMBINED TAMPING AND ROLLING MACHINE.

[Application filed Nov. 26, 1897.) 7 (No Model.) '5 Sheets8heet 2.

hmflkwullmaw w r Wm M'bMl WW M40 w a No. 6I9,426. Patented Feb. l4,I899.

G. A. MAUGER. COMBINED TAMPINGAND ROLLING MACHINE.

{Application filed Nov. 26. 18972) (No Model.) 5 SheetsSheet 3.

@Ztnesses/ No. 6I9,426.

Patented Feb. l4, I899.

G. A. MAUGER. COMBINED TAMPING AND ROLLING MACHINE.

[Application filed Nov. 26, 1897.)

(No Model.)

5 Sheets-Sheet 4.

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a. A. MAUGER. V COMBINED TAIIIPING AND ROLLING MACHINE.

[Application filed Nov. 26, 1897.\ (No Model.) 5 Sheets-Sheet 5.

M Patented Feb. I4, I899.

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ilnrrnn STATES I PATENT FFIQE.

GEORGE A. MAUGER, OF KANSAS CITY, MISSOURI, ASSIGNOR OF ONE-HALF TOHENRY R. KASSON, OF SAME PLACE.

COMBINED TAMPING AND ROLLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 619,426, ated February14, 189

Application filed November 26,1897. Serial No. 659,833. (No model.)

thereof.

My invention relates to combined tamping and rolling machines for useparticularly in laying asphalt street-pavements, sidewalks, &c.; and itconsists of a roller and a series of tampers in advance of the roller,each tamper being arranged to operate with such rapidity that eachstroke will overlap a part of the surface acted upon by the precedingstroke.

The object of the invention is to produce a street-paving machine in theform of a roller driven by steam or equivalent power, provided with aseries of tampers by which the asphaltum may be automatically andreliably packed with a uniform pressureunattainable, practically, by mannal powersufficient to prevent the roller following in the wake of thetampers from waving or undulating the surface of the street, to the endthat a perfectly level surface, and consequently a more durable roadway,other things being equal, may be produced.

Other desirable objects attainable by the use of my machine are thegreat rapidity with which the work is doneviz, about eight yards perminutethe reduction of the cost of the work, and the important fact thata street thus paved can be opened up to traffic within about twenty-fourhours instead of about six days, as at present.

To these ends the invention further consists in certain novel andpeculiar features of construction and combinations of parts, as will behereinafter described and claimed.

Referring to the accompanying drawings, Figure 1 is a front elevation ofmy combined tamping and rolling machine. Fig. 2 is a side elevation ofthe front portion of the same. Fig. 3 is a horizontal section taken onthe line III III of Fig. 2. Fig. at is a view, partly in side elevationand partly in vertical section. Fig. 5 is a horizontal section takenjust above the guide-brackets hereinafter referred to. 6 is a horizontalsection to show more clearly the form and arrangement of the tampers,the tampers in said figure facing in the opposite direction from theirposition in Fig. 5.

In the said drawings, 1 designates a platform of any suitable form andconstruction.

2 designates the roller forleveling and packing the surface of thestreet, arranged at the front end of the platform and mounted rigidlyupon the shaft 3, journaled in bearings 4, secured to the channel-ironsforming the sides of the platforms, and said roller is provided with aninternal gear 5, for a purpose which will hereinafter appear.

6 designates the roller by which the rear end of the platform issupported and by which the machine is steered. It is journaled in thedepending arms of a U-shaped frame 7, and 8 designates the stem of saidframe, said stem projecting vertically upward and contrally through theplatform and the bearingstandard 9, bolted or otherwise secured to theplatform.

The helm by which the steering-wheel is controlled is mounted rigidlyupon the upper end of the stem 8 and, projecting forwardly therefrom, isprovided with the intersecting horizontal and vertical slots 10 and 11,the horizontal slot being arranged to receive the adjustableworm-wheel12 and permit the rotatable operation of the same and the slot11 to receive the grooved guide-rollers 13, journaled upon the upper andlower sides of said Worm-wheel, to the end that the same may be adjustedlongitudinally with a minimum of friction and at the same time permitthe free movement of the helm in one direction or the other. Saidworm-wheel is mounted operatively upon the screw or worm shaft 14, whichis journaled at its opposite ends in the bearing-standards 15, securedto the platform, and said screw or worm shaft is revolved by means of ahand or steering wheel 16 in the customary manner. A seat 17, supportedas shown or in any other suitable manner, is arranged adjacent to saidsteering-wheel in .the shaft 22.

order that the engineer may conveniently control the direction oftravel.

The engine or other motor is mounted upon the platform in any suitablemanner, and the shaft 18 of said motor carries a drive-pinion 19,meshing continuously with the gear-wheel 20, secured by means of aset-screw 21 or its equivalent upon a counter-shaft 22, journaled nearone end in a bearing-standard 23. A small sprocket-wheel 24, connectedrigidly to the gear-wheel through the medium of a chain, (illustrated bydotted lines in Fig. 3,) drives the large sprocket-wheel 25 upon theshort shaft 26, journaled in a wide bearing 27, secured to theplatform-framework, and said Wheel, through the medium of the pinion 28upon the inner end of said shaft, drives the roller 2 by engagement withthe internal gear 5, hereinbefore referred to.

From the foregoing it will be seen that the machine is propelled andsteered by mechanism which is old in the art or in kindred arts, and tosuch mechanism per se no claim is made Mounted rotatably upon theopposite end of the shaft 22 and journaled in the bearingstandard 23,companion to the bearing-standard 23 first mentioned, is a cylindricalclutchsection 29, and mounted upon its outer end is a smallsprocket-wheel 30, said clutch-section being prevented from movinglongitudinally upon the shaft by means of collars 31 at opposite sidesof said bearing-standard or by equivalent means. 32 designates acompanion clutch-section, mounted in the customary manner to slide butnot rotate upon It is pressed toward the clutchsection 29 by means ofthe usual coil-spring 33 encircling the shaft and hearing at itsopposite end against the collar 34,secured upon the shaft. 35 designatesa lever by means of which said clutch-sections can be disengaged. It ismounted upon the standard 36 and has its forked end connected in thecustomary manner to the band 37, mounted loosely in a groove (not shown)in the periphery of said clutch-section 32. Said lever is adapted to beheld at any point of adjustment by means of the customaryspring-actuated dog and sector (not shown) or equiva lent means. As thisclutch mechanism whereby the sprocket-wheel 30 is thrown in orout ofgear with the shaft 32 is old, no claim is made to it except incombination with parts to be hereinafter described.

A skeleton rectangular frame,by which the tamping mechanism is carried,is mounted upon the front end of the platform-frame just in advance ofthe roller 2, and this frame is preferably constructed of angle-ironbecause of its strength, rigidity, and light weight. The frame isconstructed as follows-that is to say, 38 designatesa pair of verticalstandards, in practice about eight feet long, bolted at their lower endsto opposite sides of the platform frame, and 39 indicates inclinedbraces, which connect the upper ends of said standards to theplatform-frame rearward of said roller, or said standards may be bracedin any other suitable or preferred manner. 40 designates a longitudinalbar which connects said standards a suitable distance from their lowerends, and 41 a similar bar which connects their upper ends together. 42designates a second pair of vertical standards projecting to the sameheight as the standards 38 and their lower ends reaching to the plane ofthe cross-bar 40. Said standards 42 oocupy positions directly in advanceof the standards 38, to the end that the four may form the corners ofthe skeleton frame. 43 designates a horizontal bar connecting the lowerends of said standards 42, and 44 a similar bar connecting their upperends.

45 designates a series of longitudinal crossbars or brackets, which formrigid connections between the bars 40 and 43, and 46 designatescross'bars or brackets, which connect the bars 41 and 44 in a similarmanner. By preference the number of cross-bars in each series equals thenumber of tampers employed, and the cross-bars or brackets 46 areprovided with alternately-arranged and depending knock-offs 47, arrangedvertically above the cross -bars or brackets 45, said knock-offs beingof W form, to the end that each may be provided with a notch having upwardly-converging wal1sin other words, an inverted-V-shaped notch.

A suitable distance above the plane of the cross-bars 45 each bar 42 isconnected to the bar 38 at the corresponding side of the machine bycross-bars 48, and secured thereon are bearing-brackets 49, in which isjourn aled a transverse shaft 50, said shaft occupying a position midwayof the frame and of the two series of knock offs 47, hereinbeforedescribed,and keyed or otherwise rigidly mounted upon one end of saidshaft is a large sprocket-wheel 51, which is connected by a chain (shownonly in dotted lines, see Fig. 3) with the sprocket-wheel 30, to the endthat the rotation of the latter wheel may more slowly revolve saidshaft.

52 designates a pair of parallel transverse bars, which connect thestandards 42 about midway their height, and secured firmly between saidbars is a series of guide-brackets 53, which project rearwardly almostto the rear side of the skeleton frame and are connected with thesuperposed cross bars or brackets 46 by a corresponding series ofvertical guide-bars 54 in any suitable manner. Said brackets 53 are alsoprovided with vertical guide-openings arranged alternately at oppositesides of and at equal distances from the center of shaft 50, throughwhich extend and also through vertically-alined openings in thecross-bars or brackets 45 rectangular bars 55, having arrow-shaped heads55 at their upper ends and carrying at their lower ends the tampingplates or blocks 56, 57, 58, 59, and 60. By reference particularly toFig. 6 it will be noticed that these tamping-blocks IIO form practicallya solid rectangular figure about equal in length to the roller 2, to theend that as the machine moves forward a path shall be made by saidtampers in the freshly-laid asphaltum in which the roller treads. Thesetampers, as above stated, collectively form a rectangular figure, butindividually are of substantially triangular form, the three-inner onesbeing of substantially equilateral-triangle form and the outer ones ofright-angle-triangle form and arranged with such relation that theiradjacent margins outline the letter W, when viewed from the front, (seeFigs. 3 and 5, particularly,) with the angular sides of the end tampersconverging rearwardly and the sides of the middle tamper divergingrearwardly in order that in the second and each succeeding stroke of thetampers said tam pers shall overlap the surface acted upon by thepreceding stroke by the tampers between said end tampers and the middletamper, provided, of course, the tampers be operated with sufficientrapidity to make two or more strokes before the machine has traveled adistance equal to the width of said rectangular figure, or, in otherwords, equal to the width of a tamper.

As illustrated, the tampers are geared to operate with such rapiditythat the third stroke overlaps about one-third of the first stroke andthe fourth stroke about one-third of the second stroke, and so on.Consequently as each tamper strikes .a blow of about four hundred andfifty pounds the asphaltum is packed so hard that the roller simplysmooths and levels without causing undulations or waves in the surfaceof the street, as may be observed in all asphalt pavements laid by themethod employing manual tampers and an exceedingly heavy roller.

In order to prevent any possibility of the loosely-laid asphaltum beingplowed up by the tampers, due to the slow but continuous movement of themachine, it is necessary that they be instantly liftedafter each stroketo a plane just above the surface, as indicated by the position of thetamper 56 in Fig. 1, the tamper 60 being shown as in the act of strikingthe asphaltum, and this I accomplish by means of coil-springs 61, whichencircle the rods or stems 55 and bear at their opposite ends againstthe cross-bars or brackets and the plates 62, secured to said rods orstems at a suitable point, said plates being adapted in the descent ofthe tampers to compress the springs slightly in order that the latter intheir reaction, assisted by the tendency of the tampers to rebound, mayelevate and hold the same above the surface of the asphalt until theyare again elevated as a preliminary to their next stroke.

63, 64, 65, 6G, and 67 designate a series of cross-heads, which areslidingly mounted upon the Vertical guide-bars 54c, and therelative'positions of said reciprocatory cross-heads determine therelative positions of the tampers 56 to 60, inclusive, to which they arerespectively adapted to be connected by means of a series of dogscarried by said cross-heads, said dogs each comprising a pair of arms68, pivoted together on the principle of a pair of ice hooks or tongsand provided at their lower ends with inwardly-disposed hooks orshoulders 69 for engagement with the arrowheads of their respective tamprods or stems, as shown most clearly in Fig. 2, and an expansive spring7 O interposed between the upper ends of said arms, so as to continuallypress the hooks 69 toward each other in order that as the eccentricsbring the cross-heads nearly to their lowest points of travel and thehook ends of the dogs strike the arrowheads said hook ends may swingapart, and then as the cross-heads attain their lowest position shall bepushed inward below said arrow-heads, and consequently as the crossheadsrise under the continued movement of the eccentrics engage thearrow-heads and elevate the tampers. These dogs, mounted upon thecross-heads, as described, are arranged vertically below the knock-offs47, to the end that the converging walls of the latter by engagementwith the rounded upper ends of the former may overcome the resistanceoffered by said springs and pivotally operate said dogs in order thatthe arrowheads may be released and the tampers permitted to drop tilltheir descent is checked by forceful impact upon the asphalt, though itis to be understood, of course, and it will be apparent by reference tothe drawings that the mechanism is arranged to permit only a singletamper to drop at a time in order to more equally distribute the strainupon the machine by not liftingall of the tampers at one time and moreeffectually and uniformly tamp or pack the asphalt, as will be readilyunderstood. It is desirable in practice to permit the tampers to descendalternately; but this of course is simply a matter which experience andjudgment may best control.

Mounted upon the shaft 50 in the customary manner and vertically belowthe guidebrackets 53 are a series of eccentrics numbered 71 to 75,inclusive, the relative arrangement of which upon the shaft determinesthe relative positions of the reciprocatory crossheads above described,and incidentally the succession of strokes of the tampers, saideccentrics being adapted, through the medium of a system of compoundlevers to be presently described, to reciprocate said crossheads, and bymeans of the dogs 68 successively elevate the tampers to about theposition shown by the tamper 58 in Fig. 1, at which point, as shown inFigs. 1 and 2, its respective knock-off 47 causes its disengagement withthe tamp-rod and permits said tamper to fall.

76 designates a rod which is mounted in arms 77, projecting forwardlyfrom the standards 42 at a point some distance above the shaft 50, andpivoted at their front ends upon said rod are the lower members 78 ofthe series of compound levers hereinbefore referred to, said membersbeing maintained at proper points upon said rod by means of separatingsleeves or collars 7 9, mounted upon said rod, or their equivalents.Said levers 78 are pivotally connected at a suitable point-in thisinstance forward of their middleto arms of said eccentrics, as shownmost clearly in Figs. 2 and 4, and at their rear or free ends arepivotally connected or linked by rods or bars 80 with the superposedreciprocatory crossheads 63 to 67, inclusive, in order that as theeccentrics revolve they shall reciprocate said cross-heads through themedium of said compound levers. By this leverage system it is obviousthat I obtain a cross-head reciprocation greatly exceeding the directstroke of the eccentric,and consequently require an engine or motor ofless horse-power capacity than would be required were the connectionbetween the cross-heads and the eccentrics direct, as in the latter caseto obtain sufficient drop for the 1ampers the eccentrics would have tobe largely increased in size or the tampers themselves would have to begreatly increased in Weight, which amounts to the same thing.

As the various operations of the machine have been described in detail,a recapitulation of the entire operation is not deemed necessary, itbeing suflicient to state that when traveling to and. from the place ofoperation the tampers are thrown out of gear by the disconnection of theclutch members, said members of course always being disconnected when itis not desired to operate the tampers. The gearing, as illustrated,provides of course for only a slow movement of the rollers and aboutthirty-four strokes per minute of the tampers; but this of course may bevaried, and the machine may also be provided with a speed-gear mechanismfor use when travelin g to and from the streets to be paved. This ofcourse being common property is not shown in the accompanying drawings.Furthermore, the number of tampers may be varied; but with the number,form, and arrangement shown it is thought the best results can beobtained. In fact, the machine has already proved a success on thestreets of various cities in Missouri.

It is to be understood, of course, that outside of the modificationsabove suggested the 'form, detail, construction, arrangement, and

proportion of parts of the machine may be varied and mechanicalequivalents substituted without departing from the spirit and scope orsacrificing any of the advantages of my invention.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a machine of the character described, an oscillatory compoundlever,a reciprocatory tamper for periodic elevation by said lever,

a knock-0E to release the tamper at a prede termined height, and meansto oscillate said lever periodically, substantially as described.

2. In a machine of the character described, a driven eccentric, a leveroperated by the same,a reciprocatory tamper elevated by said lever, anda knock-0E to release the tamper at a predetermined height,substantially as described.

3. In a machine of the character described, a tamper, a driveneccentric, a compound lever connected to the eccentric and engaging thetamper and adapted to lift the latter once in each revolution of theeccentric, and a knock-off to release the tamper when it attains apredetermined height, substantially as described.

4. Inamachine of the character described, a tamper, a reciprocatorycross-head connected thereto, and an oscillating lever adapted toperiodically elevate the tamper, substantially as described.

5. In a machine of the character described, a tamper, a reciprocatorycross-head connected thereto, an oscillating lever to periodicallyelevate the cross-head, and a knock-0E to release the cross-head when itattains a predetermined height, substantially as described.

6. In a machine of the character described, a tam per, a reciprocatorycross-head connected thereto, a driven eccentric, and a compound leverconnecting the eccentric and the crosshead, substantially as described.

'7. In a machine of the character described, a tamper, a reciprocatorycross-head connected thereto, a driven eccentric, a compound leverconnecting the eccentric and the crosshead, and a knock-0d to disconnectthe crosshead and the tamper, substantially as described.

8. In a machine of the character described, a tamper, a reciprocatorycross-head connected thereto, a driven eccentric, a lever fulcrumed atone end and pivotally connected to the eccentric, and a link connectingthe lever and the cross-head, substantially as described.

9. In a machine of the character described,

the combination with a wheeled framework,

the front Wheel of which is in the form of a pressure-roller, and aplurality of tampers, which conjointly are adapted to cover a surfaceequal in length to said roller, and arranged in advance thereof, of adriven shaft, eccentrics mounted thereon, reciprocatory cross-heads,dogs carried thereby and adapted to automatically engage the stems ofthe tampers and lift them to a predetermined height, levers fulcrumed atone end and pivotally connected to said eccentrics, links pivotallyconnecting the opposite ends of said levers with said reciprocatorycross -heads, and knock-offs to disengage said dogs from the tampersafter the latter have attained a predetermined height,substantially asdescribed.

10. In a machine of the character described, the combination of a seriesof tampers of such configuration that the joint between them representsthe letter W, substantially as shown and described.

11. In a machine of the character described, a suitable frame, a tamper,having a vertical stem, suitably guided upon the frame, a driveneccentric, a compound lever connected to the eccentric and engaging thetamper and adapted to lift the latter once in each revolution of theeccentric, a knock-off to release the tamper, when it attains apredetermined height, from the influence of the lever and permit theformer to fall, and a spring 61 adapted to be compressed under the powerof the descending tamper, and adapted to raise and hold the tamper abovethe surface of the street immediately its limit of descent has beenattained, substantially as described. In testimony whereof I affix mysignature in the presence of two Witnesses.

GEORGE A. MAUGER. W'itnesses:

G. Y. THORPE, M. R. REMLEY.

